pub trait SerWriter<W>where
W: Write,{
// Required methods
fn new(writer: W) -> Self
where Self: Sized;
fn finish(&mut self, df: &mut DataFrame) -> Result<(), PolarsError>;
}pub trait SerWriter<W>where
W: Write,{
// Required methods
fn new(writer: W) -> Self
where Self: Sized;
fn finish(&mut self, df: &mut DataFrame) -> Result<(), PolarsError>;
}